Addonics AE4RCS35NSA Disk Array 4SA for Serial ATA Hard Drive Hard drive disk array for PC/AT or compatible systems Accommodates up to 4 3.5-inch SATA or SATA II hard drives RAID 0, RAID 1, RAID 5 and JBOD configurations; CFM fan system for efficient cooling High throughput up to 150 MB/sec with SATA and 300 MB/sec with SATA II 1-year warranty